<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Flexbox Layout Example</title>
    <style>
        .container {
            display: flex; /* 使用 Flexbox 布局 */
            justify-content: space-around; /* 水平空间平分 */
            align-items: center; /* 垂直居中对齐 */
            height: 200px; /* 设定容器的高度 */
        }
        .column {
            width: 30%; /* 每列占宽度的 30% */
            background-color: lightgreen;
            margin: 10px;
            text-align: center;
        }
    </style>
</head>
<body>
<div class="container">
    <div class="column">Column 1</div>
    <div class="column">Column 2</div>
    <div class="column">Column 3</div>
</div>
</body>
</html>
